Need for Speed - Subtraction: 0 to 9 | |||||||||
![]() Common Core Math Alignment: 2.OA.2. Fluently add and subtract within 20 using mental strategies.
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50% (250 x 300) |
75% (375 x 450) |
100% (500 x 600) |
150% (750 x 900) |
200% (1000 x 1200) |
300% (1500 x 1800) |